Four-wheel bogies for rail cars and the like



June 30', 1959 J. COOPER FOUR-WHEEL BOGIES FOR RAIL CARS AND THE LIKE Filed July 12, 1956 5 Sheets-Sheet 1 lNl/ENTOR 1L5, Coo arr A a um f ATTORNEYS J. COOPER Jam 30, 1959 -FOURLWHEEL BOGIES FOR RAIL CARS AND THE LIKE Filed July 12, 1956 5 Sheets-Sheet 2 IN VE N TOR James 'Coo er ATTORN Y June 30, 1959 J. COOPER I 2,892,420

HFOUR-WHEEL BOGIES FOR RAIKCARS AND THE LIKE Filed July 12, 1956 5 Shets-Shet s I IN VENTOR I Lame: Cooper 7 By hmm ATTORNEY June 30, 1959 J. COOPER FOUR-WHEEL seems FOR RAIL CARS" AND THE LIKE Filed July 12, 1956 5 Sheets-Sheet 4 INVENTOR J; mes awft! B ATTORNEY June 30, 1959 J. COOPER 2,892,420

FOUR-WHEEL BOGIES FOR RAIL. CARS AND THE LIKE Filed July 12, 1956 5 Shets-Sheet 5 A'TToRA/Em R m E M V a we S e m a m v a? Em. m m RN vm L k 1;? 5 Ill QT w I W MEI U :gg U m W m P 3 x o Rm Ev g v Q United States Patent inonnwrmnnnonms IFGRYRAILiCARS AND THE LIKE James .Cooper, are, England ApplicationJulyl12,;1956,.SerialjNo.597,476 filaims priority,,application Great Bi' itain Jlily 18,1955

v4612mm. (Cl. 105.-19.4)

'lihe present. invention :relates ;to ifour-wheel r'bogies ator trail wars and the like and. has. for :itstdbject: to provide :improvementsin suchibogies whichawill result in: improved riding characteristics and in reduced wear on the :wheel .tires.

A further -object is to reduce. and simplify as'farlas possible the alterations 'which are .required to enable 'such abogiestoihe usedon railway tracks.ofdifierentzgauges.

The :four bogie "wheels of the bogie according to=.the

present invention have separatezaxles mounted respec- "iti-velyuon four cantilever arms which are .pivotally-com -:nected to:a main bogie frame andextendzlongitudinally :two from each end .of said .bogie 'frame; 'each of :these -cantilever arms .is rigid with a dropsarm depending :from

Referring to "Figs. 1 to3, thepower lbogiehas ,a.sub-

..stantially.rectangular'bogieframe composed of oifsideand .nearside frame un'its'll, 12 interconnected by .upper and llowertcross tubes 13, 14, 15,16. The'flbogie framecarfies .asubstantially rectangular 'bolsterTZ which is .resiliently .supported iby four helical spfingsj19,.-20, 21, 22. lA p'ivot 41nd rubbing pa'ds'23 for the rail caribody are providedaon top of thebolster I7 whichis guided in its vertical movements by pairs of upright'Lsection-guide members 23, 24, and has its tends resiliently connected' to the bogierframe 'tbYttBIlSiOIl .members 25, 26 embodying 'springsyand'sshock :rabsorbers. cThe raxlestot the four bogie-whee1s.2-7, 28, 29,311 are mounted in bearings in the ends of four forked cantilever arms 31, 32, 33, 34 which are mounted on pivot axles 35, 36, 37, 38 on the four corners of the bogie frame. The two front pivot axles 37, 38 are coaxial with one another as are also the two rear pivot axles 35, 36.

Each cantilever arm has two drop arms, of which drop arms 39, 40, 41, 42 are visible in Fig. 2 and drop arms 39 and 43 in Fig. 3. These drop arms are rigid with the corresponding cantilever arms and depend from the pivot axles 35, 36, 37, 38, the drop arms of each set being located one on each side of the corresponding bogie wheel as seen in end elevation. The lower ends of these drop arms are coupled respectively to the corresponding drop arms on the other cantilever arms on the same side of the bogie through springs contained in spring boxes such as 46 (Fig. 3). The arrangement of the springs and spring boxes will be described later with reference to Fig. 7.

1'2 Further drop arms, 44, 45 (Fig. 2) are rigidly attached to parts of the-bogie frame unitsE-ll: and 12 respectively vatone end of the :bogiein line with :the bogie wheels. 29,

lrfilhasrseenin elevationand two similarly arranged drop tarms (not shown) are'rigidly attached :to parts :of .the

,pendent movement of :thecantilevenarms is allowed-:for :by theprovision ,of ballrand socket joints 471,48 :.between theparts of the cross tubes =bolted-to the cantilever zarmsyand thosebolted-to the differentialgear units.

The-cantilever arms have rigidly fixed to them above their middle drop arms upwardly projecting arms 5-1, :52, E53, 54 carrying bumper pads, such as 55, 56 (Fig. .3) adapted to cooperate with corresponding "bumper-pads,

such 21857, 58;(Fig. 3) carried by brackets 59,160, 61,

62, on the tubes 13, 14.

Torque reaction arms-63,64 and 65, 66 interconnect :lugs 67,168 on tubes 14, 13 with lugs 69, 70 on *topmf the difierentialcasings 49, 50.

Power is transmitted to the bogie Wheels .27, 28, 39, :30 from a-power unit (not shown) .intherailcar body-.10 a shaft 71 and thence via a universal coupling ,72to-the input shaft 73 of the diiferential gear contained 1 in the difierential casing 50. .The output from this dilferential gear is transmitted "through axles housed in the tube-48 and embodying .Hardy-Spicer connections to .the rear bogie wheels-27,28. A further outp'ut shaft 74tdriven-lhy .a :bevel 3 gear not shown) meshing 'with .the output 1 gears of :the diiferentialtransmits the drive further'throughaa universal .coupl-ing'75, a shaft 76, a further universal coupling 77 .to thelinput shaft ,of the differential gear conwtained in the1difierentialcasing 49. The front ,painof 2,233; .84, 85; 86;, -87 88,"89 which-are adapted .todae sclosed together by cam mechanisms (not shown) .-to

clamp ?b.6tW6611 .them parts of the outer @rnargins .of .the corresponding brake discs, and to be separated whentthe -1cam ,pressure .is released :by Belleville washers (not .shown) arranged .between them. The :cam .mechanisms .are operated hyJevers, such.as 9tl, 91, (Eig..3.).

The trailing .bogie (Figs. 4 .to 45,) generallyasimilar to the power bogie described above and illustrated in Figs. 1 to 3. It differs, however, in the following respects.

The bogie wheels 27, 28, 29', 30 are not driven, and consequently the transmission shafts 71, 73, 74, 76, universal couplings 72, 75, 77, differential gears and their casings 49, 50, axle tubes 47, 48, lugs 67, 63, 69, 70, links 63, 64, 65, 66 (Figs. 1 to 3) can be dispensed with. Due to the absence of axle tubes between their ends, the cantilever arms 31, 32', 33, 34, on one side of the bogie are movable independently of those on the other side. Each bogie wheel also has brake discs 78, 79', 81' with corresponding brake shoes and operating mechanisms on both sides instead of only on one side.

Both bogies can be altered easily and quickly to suit railway tracks of different gauges. The only important change that is necessary in the case of the trailing bogie (Figs. 4-6) is to replace the cross tubes 13', 14, 15',

-16 by longer or shorter cross tubes, while, in the case of the power bogie, the only additional important change that need be made is to replace the axle tubes 47, 48 and the shafts within them by others of shorter or greater :length. i V p Y In Fig. 7 the bogie wheel 28 is connected to the spring box 46' in a similar manner to the bogie wheel 30'. The bottom ends of movable drop arms 43 and 92' are connected to tension rods 43A and 92A respectively and the bottom end of fixed drop arm 93 is connected to 93'A.

The spring box 46' contains six compression springs, one for each tension rod.

If the bogie wheel 28' is raised so that its cantilever arm 32 is moved away from the observer of Fig. 7

-the tension rods 43'A and 92'A will be drawn to the lever arm 34 which it tends to lower and part is transmitted to the bogie frame via the fixed drop arm 45'.

If however the bogie wheel 30' is raised the spring box 46' will be urged resiliently to the left and the resulting reacting will be transmitted through the spring box 46' partly to the cantilever arm 32' which it tends to lower and partly to the bogie frame via the fixed drop arm 93'.

I claim:

1. A four-wheel rail vehicle bogie, comprising a bogie 'frame, two cantilever arms pivotally connected to said bogie frame and extending longitudinally from the front end thereof, two other cantilever arms pivotally connected and longitudinally extending from the rear end of said bogie frame, four bogie wheels having separate axles journalled respectively in the free ends of the four cantilever arms, drop arms rigid with said cantilever arms and depending from parts thereof beneath their pivotal connections with the bogie frame, fixed drop arms rigid with said bogie frame and depending respectively close to said first mentioned drop arms, two spring couplings located respectively beneath the off side and near side of the bogie frame and each including a spring-supporting unit and a plurality of springs located within said springsupporting unit, and tension members connected at one end to the lower ends of the first-mentioned and fixed drop arms and at the other end, each through separate springs of the corresponding spring coupling, to the spring-supporting unit of said corresponding spring coupling.

2,892,420 V V r I extending longitudinally from the front and rear ends respectively of each frame unit, four bogie wheels having separate axles journalled respectively in the free ends of said cantilever arms, drop arms rigid with said cantilever arms and depending from parts thereof adjacent their pivotal connections with the frame units, and two spring coupling assemblies, one resiliently interconnecting the lower ends of the drop arms of the cantilever arms connected to the offside frame unit and the other resiliently interconnecting the lower ends of the drop arms of the cantilever arms connected to the near side frame unit.

3. A four wheel rail vehicle bogie as claimed in claim 1, comprising, in addition, upwardly projecting arms rigid with said cantilever arms and extending from parts thereof above their pivotal connections with the bogie frame, bumper pads carried by said upwardly projecting arms, upstanding brackets rigid with the frame located in longitudinal alignment with said upwardly projecting arms, and bumper pads carried by said brackets and cooperating with said first-mentioned bumper pads to limit upward pivotal movement of the corresponding cantilever arms.

4. A four-wheel rail vehicle bogie, comprising an offside frame unit, a nearside frame unit, upper and lower cross-tubes interconnecting said offside and near-side frame units close to each end thereof, front and rear forked cantilever arms pivotally connected to and having their forked parts extending longitudinally in side-byside spaced relationship from the rear ends respectively of each frame unit, four bogie wheels accommodated between the forked parts of said cantilever arms and having separate axles journalled respectively in the free ends of said forked parts, drop arms rigid with said cantilever arms and depending from parts thereof adjacent their pivotal connections with the frame units, and two spring coupling assemblies, one resiliently interconnecting the lower ends of the drop arms of the cantilever arms connected to the ofiside frame unit and the other resiliently interconnecting the lower ends of the drop arms of the cantilever arms connected to the nearside frame unit.

References Cited in the file of this patent UNITED STATES PATENTS 1,622,765 Claypoole Mar. 29, 1927 1,831,714 Latshaw Nov. 10, 1931 1,884,657 Gerlinger Oct. 25, 1932 2,023,756 Brownyer Dec. 10, 1935 2,026,076 Spicer Dec. 31, 1935 2,071,502 Dalton Feb. 23, 1937 2,271,195 Joy Jan. 27, 1942 2,543,930 Pachter Mar. 6, 1951 2,744,471 Moeller May 8, 1956 FOREIGN PATENTS 507,342 Belgium Dec. 15, 1951 413,860 France Aug. 20, 1910 414,112 France Aug. 26, 1910 573,265 Great Britain Nov. 13, 1943 

